Synthesis of Graphene Oxide Coating on ZnCo2S4 Using Hydrothermal Method for Electrochemical Capacitors Applications S. Deepalakshmi, M.S. Revathy, J. Richards Joshua, L. Saravanan, S. Thanikaikarasan, R. Jansi, M.A. Majeed Khan, O. Savadogo Journal of New Materials for Electrochemical Systems, 2023 Due to the manufacturing and utilization of innovative electric devices which need energy storage systems using edge-cutting technologies as electrochemical capacitors in many areas including mobility, there is an increased demand for research and development on new materials for energy storage devices.In this research, a bimetallic sulfide as ZnCo2S4 with graphene oxide was identified and developed as electrode material for an electrochemical capacitor.Synthesis of ZnCo2S4 and ZnCo2S4@GO(1%) was elaborated by hydrothermal method.Characterization of materials was achieved using X-ray diffraction, Field Emission Scanning Electron Microscopy, Cyclic Voltammetry, and galvanostatic charge-discharge analysis.From the result, it is observed that the specific capacitance of ZnCo2S4@GO(1%) is 1060 Fg -1 at the current density of 1 Ag -1 was greater compared with ZnCo2S4.ZnCo2S4@GO(1%) has a power density of 8500 W Kg -1 with an energy density of 43 Wh Kg -1 .Due to the addition of GO the electrochemical performance was improved on ZnCo2S4.From the excellent result, it is observed that ZnCo2S4@GO(1%) is the right choice for the fabrication of energy storage devices.
